Machine fob cutting



J.'D. BUZZELL. STONE DRESSING MACHINE.

N0; 880. 'Patent'edllig. 13, 1,838.

n. PETERS: wmw Ii. c.

UNITED STATES PATENT oEEio JOHN BUBRELL, E CAPE ELIZABIHIH, MAINE.

I MACHINE FOR CUTTING, DRESSING, GROOVING, AND BEADING MARBLE AND o'rHER STONES AND SOCKET AND CHISEL USED IN THE SAME.

Specification of Letters Patent No. 880, dated August 13, 1 838.

To all whom it may concern:

Be it known that I, JOHN D. BURRELL, of

Cape Elizabeth, in the county of Cumberland and State of Maine, have invented a new application of the use of malleable-iron sockets and malleable-steel cutters or chisels to be used in revolving cylinders for the purpose of dressing grooving and beading marble and other stone; and I have invented a new application of the lateral motion to revolving cylinders for the purpose of dressing and polishing .marble and other stone and also for the purpose of grinding and making even the points or edges of the tools used in the cast-iron cylinders for dressing marble and other stone; and I do declare that the following is a full and 'exact description thereof.

1st. My first named invention consists in forming and molding in triangular shape as described in my Letters Patent from the United'St-ates under date of May 15th, A. D. 1837, certain cutters or Chisels of themet-al called malleable steel and of molding or forming of the metal called malleable 11'011,

sockets, such as are described in my Letters Patent aforesaid into which said cutters or Chisels are inserted. Specimens of each are herewith deposited.

The superior advantage derived from my invention consists in molding in exact form seen at letters a, a, section 18 on the draw ing hereunto annexed. Each end of the shaft 0 rests and revolves in boxes marked 0, 0, connected to the movable carriage by bolts or screws as represented 1n said section 18. The left hand box is so constructed that.

lowered for the purpose of conforming to a :cylinder of greater or less diameter. The cams made fast to this shaft are in number equal to the cylinders desired to be operated and are made to revolve with the shaft by means of a bevel geared cog; wheel on one end of the shaft 0 which is operated upon and made to revolve by means of abevelj geared cog wheel on the end of the shaft of the cutting cylinder as seen at letters d and e 1n section 18. l r

The formation of the cam lime in 'mym achlne is represented at section 24:,0nthe annexed drawing and its connection with the shaft 0 and operation on theoval iron is: more fully delineated at sectionl6. This oval iron is connected to an iron which passes. through the cross bar ofthe sliding box by a joint marked. h on the annexed drawing and fully repre sented at sections 16 and-2O by the same letters. This sliding box is of cast or malleable iron and in form as represented at section 20. The sides of the sliding boxmarked figure 2 are of dovetail form and are ing serted in, and are made to moveupward and downward 1n a groove cut or castin the plate of iron so as to conform to the dove- ,ta iled slides before described. These irons in j which the slides are inserted are fully repre-,

sented at section 23 at figures3 and 3 on the annexed drawing and are fastened. by

bolts to the upper plate of the movable carriage as seen at letters P, P, section 18. The

slides are moved up and down by means of a screen which passes through the crossbar ofthe slides and fastened to them. The upl in the cross bar, the slides are raised or'low- I ered at pleasure. A representation of these nuts may be seen at the top of the screen in section 20. The use of this slide and the apparatus connected with it is for the purpose of keeping the shafts of the polish ng cylinder in contact with a semicircular branch attached to the lower part of the oblong oval iron or stirrup while raising. or lowering the polishing cylinder so as to adjust it to the -material to be operated 'upo-n. This stirrup is represented at letters a u on SeCtiQILlG and being formed so as to apply to the shaft of the cylinder, runs in a groove 1n thesha'ft similar to that represented at section 17 at point marked 1' a" on the annexed drawing.

The cams are so fixed to the shaft marked 0, at section18 as to give to the oval formed iron seen at section 16., within which they revolve, a vibratory or lateral motion which motion is communlcated to the pollshing and grinding cylinders by means of the semicircular branch or stirrup marked u, u, section 16, running in a groove of the shaft of the cylinder as before described. This lateral motion serves to keep the polishing face.

7 section 17 on the annexed drawing and used for the purpose of marking even the points 7 or edges of the tools used in the cutting cylinder of my stone dressingmachine patented as aforesaid, is placed parallel and immediately behind the cutting cylinder. Its shaft near each end of this cylinder runs in movable boxes or bearings attached to the 7 wheel attached to the end of the lower plate of the movable carriage. A representation of this box or bearing may be seen at section 19 of the drawing hereunto annexed.

' The letters Z, Z,Z, represent the stationary part of the box or bearing.

Letters m, m, representthe movable part of the box.

Figures 5, 5, 5, 5, 5 represent iron pins used for the purpose of keeping the movable part of the box or bearing in place.

Fig. 6 represents the bevel geared cog screw wh1ch passes through the stationary part of the box and into the movable bearing, which screw when turned moves backward or forward the movable bearing.

No. 7 represents the screw. That part of it which passes through the stationary part of the box is not threaded.

The movable bearing is cast in two parts which are coupled together and fastened by These bearings. in which eachend, of the grinding cylinder runs are moved bymeans of a long iron shaft fastened by bearings to the lower plate of the movable carriage. This shaft runs parallel with'the grinding cylinder and immediately behind it, at each end of which there are bevel geared cog wheels, which mesh into the bevel geared cog wheels on the ends of the screws before described, and represented at No." 6, section 19. This shaft is turned by a crank, and thus both screws which move the bearings of the grinding cylinder are turnedat the same time and exactly the same discylinder. lVhen the tools are sufficiently ground the grinding cylinder is carried back by the same means by which it is brought forward, so as not to interfere with the cutting cylinder when'inv operation.

'On the end of the grinding cylinder shaft,

as represented at section 17 on the annexed drawing, is an iron pulley marked 8, s, with V flanges for the purpose of preventing the band from slipping off. This pulley is seen at letter j, section 18 of the drawing hereunto annexed. This small pulley is connected by a band to a large iron*pulley placed on the end of the polishing cylinder as seen at letter 70, section 18. 'The band is marked a, on theannexed drawing. -The grinding cylinder is thus made to revolve with great rapidity having the lateral motion by means of the cam as before described corresponding to that which gives the lateral motion to the polishing cylinders as'before described.

The coupling of the shafts of the cylinders to which I design to give the lateral motion a I have delineated on the annexed drawings and are seen at sections 21 and 22.

Figure 10 represents the polishingcylinder on section 21. j

Figure 8 at section 21, represents the shaft coupled together. 7

Figures 9, 9 at section 22 represents the two parts of the shaft disconnected.

Letters a, a, at section 22 represent the barrel of the coupling part of the shaft.

Letter 6 of section 22 represents the large part of the gudgeon of'the coupling shaft.

Letter 0 of the same section represents the small part or pivot ofthe same shaft.

A hole-is made in the barrel of the shaft marked a, a as before. described so-as to conform to the gudgeon part of; the shaft Imarked bandc. 'The pivot 0 fits snugly,

but the larger' part marked 6 is sufficiently loose, so as to prevent friction.

Letter 0, section 22, represents a parallelogram or slit four inches or more long and one half inch wide. 7

Letter f, section 22, represents the key hole in. the gudgeon part of the shaft one half an inch indiameter made round into which a key is inserted when coupled to gether. The long parallelogram key hole thus allows alengthening and shortening of the. shaft,:sothat th e stump of the oblong oval iron represented at section sixteen being attached tothe grinding or polishing cylinder gives to it a lateral motion without acting upon or moving laterally the wheel that gives to the polishing cylinders the rotary motion.

Each of the inventions herein described may be and are intended to be used in connection with my stone dressing machine or in separate machinery all combined or separately for the purposes herein described.

The drawings hereunto annexed embraces my stone dressing machine patented as afore- J said with sections of the same to which are added sections 16, 17, 1s, 19, 20, '21, 22, 23,

24, and 25,'introduced to show articularly the invention'herein set forth a l of which are referred to in the foregoing specifications.

By means of the combination of machinery which regulates and puts in motion the cutting and grinding cylinders the latter may be brought to bear upon the tools, whenever they are found to be uneven, Whether the cutting cylinder is in operation or not.

What I claim as my invention and for which I desire to secureLetters Patent is The application and use of malleable iron sockets and the application and use of mal leable steel cutters or chisels for the purpose of cutting, grooving, fiuting and heading marble and other stone, the application of the. lateral motion to revolving cylinders used for the above said purposes of dressing and polishing marble and other stone; also the combinatlon of machinery: as before described by which I give at the same time the rotary and lateral mot-ion by means of the cam and the coupling joint delina-ted and described in the aforesaid drawings and specifications; also the combinationof ma,-

chinery by which the points of the tools in the cast iron cylinder are made even by means of a grinder having a lateral and rotary motion acting on the points of the tools, all as above described.

JOHN D. BURRELL. Witnessesz BENJAMIN MCKENNEY, GEORGE H. SMITH. 

